Abstract
Dielectric constant ε, loss tan δ, a.c. conductivity Σ and dielectric breakdown strength of NaF-B2O3 glasses doped with certain transition metal ions (viz. Cu2+, VO2+, Ti4+ and Mn4+) are studied in the frequency range 102-107 Hz and in the temperature range 30–250°C. The values of ε, tan δ, Σa.c. are found to be the highest for Cu2+ doped glasses and the lowest for Mn4+ doped glasses. Activation energy for a.c. conduction and the value of dielectric breakdown strength are found to be the lowest for Cu2+ doped glasses and the highest for Mn4+ doped glasses. With the help of infrared spectra, increase in the values of ε and tan δ of these glasses with frequency and temperature are identified with space charge polarization. An attempt has been made to explain a.c. conduction phenomenon on the basis of quantum mechanical tunneling model (QMT)/carrier barrier hopping model.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Ahmed A A and Abd-Elshafi N 1998Indian J. Pure & Appl. Phys. 36 335
Austin I G and Mott N F 1969Adv. Phys. 18 657
Butcher P and Hyden K J 1977Philos. Mag. 36 657
Elliot S R 1987Adv. Phys. 36 135
Ghosh A and Chauduri R K 1996J. Non-Cryst. Solids 83 151
Khalifa F A and Elhadi A A 1996Indian J. Pure & Appl. Phys. 34 201
Kumar A V R and Veeraiah N 1999J. Mater. Sci. Lett. 18 475
Mallawany R El 1994Mat er. Chem. Phys. 37 157
Nageswara Rao K and Veeraiah N 2000Indian J. Phys. A B74 37
Pollak M 1971Philos. Mag. 23 519
Ramana M V and Sastry G S 1989Phys. Status Solidi B116 K206
Ravi Kumar V and Veeraiah N 1995Phys. Status Solidi A47 601
Ravi Kumar V and Veeraiah N 1998J. Phys. Chem. Solids 59 91
Ravi Kumar V, Veeraiah N and Buddudu S 1997J. Phys. III 70 951
Sagar K D, Kistaiah P, Rao B A, Murthy K S N and Veeraiah N 1998Indian J. Pure & Appl. Phys. 36 467
Sagar K D, Kistaiah P, Rao B A, Murthy K S N and Veeraiah N 1999J. Mater. Sci. Lett. 18 55
Sridhar B, Indira B and Bhatnagar A K 1995Indian J. Pure & Appl. Phys. 33 253
Tanaka K 1985Solid State Commun. 54 867
Tareev B 1979Physics of dielectric materials (Moscow: MIR Publishers)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Murthy, M.K., Murthy, K.S.N. & Veeraiah, N. Dielectric properties of NaF-B2O3 glasses doped with certain transition metal ions. Bull Mater Sci 23, 285–293 (2000). https://doi.org/10.1007/BF02720084
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02720084